What is Vitamin D?

Category: Supplements

Most popular types: Vitamin D Prescription NatureMade Vitamin D CVS Vitamin D Show all

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Vitamin D is a fat-soluble vitamin that was isolated in 1930 and named calciferol. Since then more metabolites have been found and the two major forms of this vitamin are now known to be vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol).

Reported purpose & perceived effectiveness
Purpose Patients Evaluations Perceived Effectiveness
General health 871 216
Multiple sclerosis 692 152
Osteopenia 133 46
Fatigue 130 37
Fibromyalgia 130 34

Show all 163 reasons taken


  • Major
  • Moderate
  • Slight
  • None
  • Can't tell

Side effects

Side effects as an overall problem

Side effects as an overall problem
Severity Evaluations
Severe 14
Moderate 16
Mild 34
None 826

Commonly reported side effects and conditions associated with Vitamin D

Side effect Patients
Nausea 5
Abdominal bloating 4
Depressed mood 3
Dizziness 3
Headaches 3
Diarrhea 2

Show all 36 reported side effects

Dosages

Based on patients currently taking Vitamin D

Dosage Patients
5,000 intl units daily 91
2,000 intl units daily 70
1,000 intl units daily 63
400 units daily 36
4,000 intl units daily 32
5,000 mg daily 27
1,000 mg daily 24
2,000 mg daily 24
400 intl units daily 20
50,000 intl units weekly 19

See all 206 dosages

Why patients stopped taking Vitamin D

Multiple reasons could be selected

Reason Patients
Other 114
Course of treatment ended 92
Doctor's advice 64
Did not seem to work 39
Expense 29
Personal research 20
Side effects too severe 12
Change in health plan coverage 2
See all 335 patients who've stopped taking Vitamin D

Duration

Currently taking Vitamin D

Duration Patients
Less than 1 month 1
1 - 6 months 20
6 months - 1 year 29
1 - 2 years 58
2 - 5 years 208
5 - 10 years 404
10 years or more 144

Stopped taking Vitamin D

Duration Patients
Less than 1 month 29
1 - 6 months 101
6 months - 1 year 61
1 - 2 years 64
2 - 5 years 61
5 - 10 years 21
10 years or more 2
Adherence
Adherence Evaluations
Always 624
Usually 190
Sometimes 46
Never taken as prescribed 30
Burden
Burden Evaluations
Very hard to take 7
Somewhat hard to take 32
A little hard to take 91
Not at all hard to take 760
Cost per month
Cost per month Evaluations
$200+ 2
$100-199 1
$50-99 1
$25-49 22
< $25 468
Not specified 396
Last updated:

98 patient evaluations for Vitamin D

Aug 8, 2008 (Started Jan 01, 2008)

  • Effectiveness
    Can't tell (for General health)
  • Side effects
    None
  • Adherence
    Usually
  • Burden
    Not at all hard to take
Dosage: 400 intl units Daily
Advice & Tips: I can't thoroughly answer this. Vit D showed up two times on this survey and I have been unable to correct it. I currently take 2000 mgs. Vit D daily. I cannot tell if it is effective or not.
Cost: < $25 monthly

  • 0 helpful marks

Aug 1, 2008 (Started Jan 14, 2008)

  • Effectiveness
    Major (for Other)
  • Side effects
    None
  • Adherence
    Sometimes
  • Burden
    Not at all hard to take
Dosage: 1000 intl units Daily
Cost: < $25 monthly

  • 0 helpful marks
Last updated:
Showing 2 of 98 patient evaluations for Vitamin D